﻿// Copyright 2012 rubicon informationstechnologie gmbh
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

using System;
using System.Collections.Generic;

namespace InjectionCop.Parser.ProblemPipe
{
  public class ProblemDuplicateFilter : IProblemPipe
  {
    private readonly IProblemPipe _problemDestination;
    private readonly List<int> _filteredIds;

    public ProblemDuplicateFilter (IProblemPipe problemDestination)
    {
      _problemDestination = problemDestination;
      _filteredIds = new List<int>();
    }

    public void AddProblem (ProblemMetadata problemMetadata)
    {
      if (!_filteredIds.Contains (problemMetadata.SourceExpressionId))
      {
        _filteredIds.Add (problemMetadata.SourceExpressionId);
        _problemDestination.AddProblem (problemMetadata);
      }
    }
  }
}
